| 摘要 |
<p>PURPOSE:To obtain easily a sprayed coating layer having low porosity, superior adhesive strength and superior resistance to corrosion at high temp. and oxidation by spraying a spraying material made of an Al alloy contg. a specified amount of Si on an iron-base alloy material to coat the material and by heat treating the coated blank at a specified temp. CONSTITUTION:A spraying material made of an Al alloy contg. 5-35wt% Si or consisting of 15-80wt% of the Al alloy and 85-20wt% Ni, Cr or Ni-Cr alloy is sprayed on an iron-base alloy material to coat the material. A small amount of a rare earth element such as Y may be contained besides Ni and Cr. The coated material is heat treated at 500-900 deg.C for about 20min-3hr.</p> |
